Hierarchy/Derived subclasses
| 439 / 86 | -> 87 | |
| -> 88 | -> 89 | |
| -> 90 | ||
| -> 91 |
uspto searches
Patent Apps in 439/86Granted Patents in 439/86
Use the links above or do an advanced search in ppubs for:
(439/86.ccls. or 439/87.ccls. or 439/88.ccls. or 439/89.ccls. or 439/90.ccls. or 439/91.ccls.)
This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.